Gold(II) sulfate is the chemical compound with the formula AuSO4 or more correctly Au2(SO4)2.

But later, it was shown that it contained the diatomic cation, Au4+2 which made it the first simple inorganic gold(II) compound.

The bond distance between the gold atoms in the diatomic cation is 249 pm.

[1][2] Gold(II) sulfate is produced by reaction of sulfuric acid and gold(III) hydroxide.

Gold(II) sulfate is unstable in air and oxidizes to hydrogen disulfoaurate(III)(HAu(SO4)2).